Price-scale.



'4 witnesses fmwf No. 817,777. PATENTED APR. 17, 1906.

' J. HOPKINSQN.

PRIGE- SCALE. APPLIOATION FILED DEO ,1, 19 05.

2 SHEETS-SHEET l.

PATENTBD APR.17, 1906.

PRICE SCALE.

APPLICATION FILED DEG-15. 1905.

' 2 SHEETS-SHEET 2.

W finesse:

WWW

' indicating mechanism controlled and oper-' unrrnn STATES PATENT OFFICE.

JOSEPH HOPKINSON, OF DAYTON, ()HIO, ASSIGNOR TO THE COMPUTING soALEooMPANY, OF DAYTON, onto, A CORPORATION 'OF omo. 1PR|CE-SQALE.

Specification, of Letters Patent.

Patented April 17. 1906.

Application filed December 15,1905. Serial No. 291.855

1'0 all whom it may concern:

Be it known that I, JOSEPH HOPKINSON, a

resident of Dayton, in the county, of Mont- -go1ne r y, State of 0hio, have invented certain new and useful Improvements in Price- Scales; and I do hereby declare the following to be a full, cleaner-1d exact description of the same, reference being had to the accoinpanying drawings, forming part of this invention, and to the lctterslof reference.

marked thereon.

This invention relates to priccsca lcs and has for its object the production of a scale of the even-balance type, but having the ca- The invention contemplates the cmplo v-' 'ment of an even-balance scale mechanism, preferably of the equal-arm type, with a goods receiver or pan onone side and the receiver" for thc counterweights on. the opposite side of the fulcrum and a price and value ated by the check devices employed for maintaining the pan m upright position, said price and value indicating mechamsm embodying a segmental chart and an indicator movable .angularly with relation thereto to indicate value at dill'crent rates, a diil'crcntial counterbalance device being introduced to resistthe movement in proportion to the weight. ol" the article being weighed.

The invention consists generally in an "even-balancc scale combined with a dill'erfront elevation, partly broken 1. Fig. 3 is a detail view of a modified arrangement of the dill'erential countcrbalancc.

The scale adopted for, illustrating the present invention embodies a base A, having central bearings a for the equal-arm lever B, and

a vertical stai-nlard k, terminal ing at the top in a housing A" for the indicating and illiterential countcrbalancing mechanisms. The 'equal-arm'lcvcr B carries at the [ends the usual knilccl rc .wrots 1), those at one end suppoigting thc goods receiver. or pan U and those at tlicop msitc cud su iporting thccountcrncigrt-rcccivcr D.

The" usual check stems and links are omitted from the present scale, and the re eivers are held in horizontal parallelism by check arms or stems ll, connected rigidly with the receivers and extending vcrt callv in the central standard, their upper ends being pivotall connected by check-links lwith the said standard. The lfllttli-lllllifi should have a radius appoximatclv equal to the radius of the scalc-lcvcr B and extend in substantially horizontal planes in order to preserve the horizontal parallelism of the pan and weightreceiver without introducing appreciable frictional resistance or irregularity .in the action 0] the scale. The check-links I extend in opposite directions from the arms 11, each being pivotally connected at one cud-1" to the upper end of its arm and pivolallv connected at the opposite cud l." to the frame. The pivotalconnections are similar in all respects to the pivotal connections used with checklinks in scales as hcrctol'orc constructed and no detail description is ncccssar. hcrcin.

The scale as thus l'ar described constitutes an c-vcn-lnllancc scale of thc c ual-arm type, the countcrpoisc-wciglits on one arm being adapted to balance a load of cqual weight on the other arm of the level. in order now to make the scale a price-scale, an indicator and differential co'unterbalancc mechanism is introd need, as follows:

l with gItNlLlttllOllfi and valuc-iudicating figures .on a segmental chart M in the upper end of the standard or the housing carried by the latter. is an angularly-a .ljustable eccentric N, to which one end of a flexible connection J is attached, the opposite end of said flexible con nection supporting a stirrup P, having a conical bearing p for a pointed pivot R, carried b a bracket 1' on the upwardly-extending c eck-arm of the receiver. The eccentric i is mounted on the carrier so. to be adjustable angularly to adjust its leverage, and it is held in position by an arm n, clamped between adjusting-screws n on the carrier K. Slack in the flexible connection may be taken up by an adjustable connection, as at F. To counterbalance the eccentric flexible connection and stirrup, the eccentric is provided with an adjustable weight 11 Thus the scale may be said to have two systems of balanced members, the connection between the systems being formed by the pointed pivot and conical hearing.

In operation the counterbalance L is etl'ective in couiiterbalancinp load on the scale on one side onl of the balancing-point, although, as shown, t e indicator has a range of movement on both sides of the balancing-point, which latter is indicated by O, the movement on the underbalance side, however, being short, as it is designed simply to enable the indicator to act as a near-weight indicator to warn the salesman of the-fact that the load being placed on the receiver is nearly sulli cientto balance the scale. It will be noted that the indicator will operate in the manner described regardless of the weight of the removable counterpoise-weights on the weightreceiver. cater has a wide range of movement in the scale illustrated equal to two pounds and the differential counterpoise operates to balance the load to the extent indicated by the chart and indicator, this counterbalancing being, 'su plemental or in addition to the counter- "hit ancing effect of the removable weights, ii any of the latter be on the receiver. oods within the capacity of "the chart and differential counterbalance the removable Weights need not be used. In addition to the figures indicating the prices per unit theindicator may have columns of figures, such as at S, indicating the values of the removable counterpoise weights at the various prices per unit. Thiis a salesman'knowiilg which removable weight is on the receiver has only to add its value at the desired rate to the value indicated on the chart atthe same rate to arrive at the total value of the goods on the pan.

Obviously the ditlerential counterbalance may be in the form of a spring instead of a endulum-weight, and in F ig, 3 the carrier K is shown having an arm T, to the end oi which a counterbalance-spring T is secured, the opposite end of the spring being connected to a On the overbalance side the indi- For all fixed stud oi projection T inthe housing or standard. To check excessive vibration or On the front of the indicator-carrier bring the scale to restquickly, a dash-pot V of ordinary construction may be employed.

While a particular type of even-balance scale is illustrated and described, it is obvious that the invention is not limited in its application to this particular type, and in the description where the term receiver or weight-receiver stood that any ordinary means for supporting the load or goods to be weighed and the rei'novable weights maybe used, the said term being used in a broar sense to include any means for the purpose mentioned.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a price-scale, the combination with the lever pivoted intermediate its ends and the goods and removable counterweight-re ceivers carried by said lever, of the upwardlyextending check-arms connected with said receivers, links connected with said arms for maintaining the horizontal parallelism of the receivers and an indicator located above the receivers and actuated by one of said arms; substantially as described.

'2. In a price-scale, the combination with the counterbalanced lever, the goods-receiver pivotally sup )orted by the lever, the upwardly-extending check-arm connected with the goods-receiver and a link connected with the arm to maintain the goods-receiver in horizontal parallelism, oi a pivoted indicator and differential counterbalance and a flexible connection between the same and upwardlyextending check-arm; substantially as described.

3. In a the weig ts and a receiveizflor goods pivotally supported on said lever, 1" 0. cheek-arm connected to the goods-receiver and extending above the lover, a link forholding the goodsreceiver in horizontal parallelism and a difi'erential counterweight andindicator in op erative engagement with the upwardly-extending checkarm; substantially as described.

4. Ina scale, the combination with a leYer, a receiver pivotally mounted on the lever and having an arm rigid therev ith and extending above the lever, said parts constituting a balanced system in the scale, of a differential counter-halancing mechanism an indicator movable. in unison with said difi'erential counterbalance mechanism and a connection between said mechanism and the upwardl extending arm on the receiver; substantiaily as described.

5. In a scale the combination-with a lever, a receiver pivotally mounted on the lever, an

arm connected to the receiver and extending above the lever, of a counterbalancing. mech-.

is used it will be under-- rice-scale, the combination with ivoted lever, a TEXVGT for counter-.

anism, and indicator connected therewith pivoted on a flared axis above the lever, a connection between the, arm and said counter-v balancing mechanism and a segmental chart and means for counterbalancing the same, of

an upwardly-extending arm connected to the rece1ver,-a creek-link connected with said arm, a diflerential counterbalancing mechanism and indicator pivoted on a lixed axis above the lever, a connection between the said counterbailancing mechanism and upwardly-extending arm and a price-chart with which the indicatorregl rs; substantially as described. I Y,

7. In a price-scale, the cuubination with the even-balance lever the receivers on opposite ends of said lever and the vertically-extending standard betyveen the receivers, of

. arms' r gidly connected with the receivers and exteridin vertically in the standard and check-lin s connecting the upper ends of said arms and standard; substantially as de -t scribed.

8. In a price-scale, the combination with the even-balance lever, the receivers on oppositeends of said lever and the vertically-extending standard between the receivers, of varms rigidly connected with the receivers and extending vertically in. the standard, checklinks between the arms and standard, a counterbalancing and price-indicating mechanism in th upper end of the standard and a connecti n between the counterbalancing and indicating mechanisms and'one of the arms;

. substantially as described' a ,"9. In a scale, a balance-lever, a receiver pivoted. thereon, a differentially-counterbalparallelism, a dilferentially-counterbalanced indicator pivotally supported independently of the lever and operating connections between the said arm and indicator; substantially as described.

11. In a scale, ahalance-lever, receivers pivotally mounted on opposite ends thereof, check arms and linksfor holding the receivers in horizontal parallelism, an indicator and pendulum-counterwcight pivotallv supported independent of theleverand operating connections between one of said check arms and the indicator and endulum-counterweight; substantially as escribcd.

12. The combination with an even-balance scale embodying receivers an equal-arm lever carrying the same and having, a movement on both sides of the balancing-point and upwardly-extending check-arms connected with the receivers, of an indicator, a differential counterbalance movable therewith, a flexible connection intermediate the counterbalance and the check-arm connected with the goodsrecciver whereby the differential counterbalance only balances goods placed on the receiver and a value-chart with which the ind icator re isters to indicate the value of goods balancet by the differential counterbalance;

' substantially as described.

JOSEPH IIOPKIN SON Witnesses H. M. W ALSH, S. L. MoKEE. 

